JP2005199840A - Frame structure for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a frame structure for a vehicle, in which a vertical kick form can be provided in each side member without performing drawing work using a large press. <P>SOLUTION: In this frame structure, a right and a left side members 5 extended in the axial direction of a vehicle are extruded of aluminum. Each side member 5 has flanges 6 and 7 in a proper number of steps between the upper and the lower flanges 3 and 4. An upper part or a lower part of the side member 5 in a prescribed range in the length direction (cross-hatching parts in a figure) are cut off except for the flanges 6 and 7 between the upper and the lower flanges 3 and 4, so that the vertical kick form is provided in each side member 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicle frame structure.

  Conventionally, in a frame structure relating to a vehicle such as a truck, a pair of left and right side members extending in the vehicle front-rear direction obtained by press forming an iron plate is a main component, and extends in the vehicle width direction with respect to each side member. In general, a ladder-type frame structure is formed by assembling a suitable number of cross members.

In this type of side member, as shown in FIG. 9, the front and rear suspension strokes are secured in the vertical direction around the front and rear of each side member 1 from the viewpoint of securing the front and rear suspension strokes. The kick shape must be set (see, for example, Patent Document 1).
JP-A-7-32076

  However, since the existing side member 1 in the prior art is composed of an iron plate press product having a channel-shaped cross-sectional shape having flanges 3 and 4 on the upper and lower sides of one web 2, it is necessary to set a kick shape in the vertical direction. The kick shape had to be drawn using a large-scale press machine, and a large capital investment was required (FIG. 10, which is a cross-sectional view taken along line XX in FIG. 9, and XI in FIG. 9). FIG. 11 is a cross-sectional view taken along the line -XI, and FIG. 12 is a cross-sectional view taken along the line XII-XII in FIG.

  The present invention has been made in view of the above circumstances, and has a novel vehicle frame structure in which a vertical kick shape can be formed on each side member without drawing using a large-scale press. It is intended to provide.

  The present invention is a vehicle frame structure in which left and right side members extending in the vehicle front-rear direction are made of extruded aluminum, and each side member has an appropriate number of flanges between upper and lower flanges. It is what.

  Thus, in this way, it becomes possible to attach a vertical kick shape to each side member simply by appropriately cutting the upper part and the lower part in each side member longitudinal direction required range, The process of drawing the kick shape using a large-scale press as in the prior art becomes unnecessary.

  In addition, side members corresponding to various vehicle types can be manufactured by appropriately changing the length of the rough members and the cut portions of the side members made of extruded aluminum.

  Further, by using aluminum extruded members for the left and right side members, the weight of the frame can be significantly reduced compared to the case where the side members of a conventional steel plate press product are employed.

  Furthermore, in the present invention, it is preferable that each side member has a plurality of webs so as to form a box structure in cooperation with each flange. In this case, the left side portion and the right side portion of each side member are provided. It is possible to attach a kick shape in the vehicle width direction to each of the side members by simply cutting the side members appropriately.

  According to the vehicle frame structure of the present invention described above, the following various excellent effects can be obtained.

  (I) A side member having a kick shape in the vertical direction can be manufactured only by a cutting process, and a drawing process by a large-scale press machine can be made unnecessary. By using the rough material of the side member, it is possible to cope with various types of vehicles by simply changing the length dimension and the cut part as appropriate, so it is possible to avoid a great investment in new equipment and greatly reduce the cost. be able to.

  (II) Since the left and right side members are made of extruded aluminum, the weight of the frame can be significantly reduced as compared with the case where the conventional side members of the steel plate press product are adopted.

  (III) If a configuration in which each side member has a plurality of webs to form a box structure in cooperation with each flange is adopted, the left side portion and the right side portion of each side member are simply cut off as appropriate. Each side member can also be given a kick shape in the vehicle width direction.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 4 show an example of an embodiment for carrying out the present invention. FIG. 1 is a side view of the embodiment, FIG. 2 is a sectional view taken along the line II-II in FIG. 1, and FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 1, and portions denoted by the same reference numerals as those in FIGS. 9 to 12 represent the same items.

  In this embodiment, the left and right side members 5 extending in the longitudinal direction of the vehicle are made of extruded aluminum, and each side member 5 has an appropriate number of steps between the upper and lower flanges 3 and 4 (two steps in the illustrated example: The flanges 6 and 7 shown in FIG. 2 are provided.

  Thus, when the side member 5 is configured in this way, the upper and lower portions in the required range in the longitudinal direction of the side member 5 as shown by cross hatching on the left side of FIG. It is possible to change the cross-sectional shape as shown in FIG. 2 to the cross-sectional shape as shown in FIG. 3 and to give each side member 5 a vertical kick shape simply by cutting away the flanges 6 and 7 of the eyes. Become.

  Further, if the lower portion of the side member 5 in the required range in the longitudinal direction as shown by cross-hatching on the right side of FIG. 1 is cut away while leaving the second-stage flange 7 from the bottom, the cross-sectional shape shown in FIG. Thus, the side members 5 can be given a kick shape in the vertical direction.

  Therefore, according to the above-described embodiment, the side member 5 having the kick shape in the vertical direction can be manufactured only by the cutting process, so that the drawing process by a large-scale press can be made unnecessary, New capital investment can be avoided and cost can be greatly reduced.

  Moreover, by using the rough material of the side member 5 made of the same aluminum extruded material, it is possible to cope with various vehicle types by changing the length dimension and the cut portion as appropriate. The capital investment can be reduced and the cost can be further reduced.

  In addition, by using aluminum extruded members for the left and right side members 5, the weight of the frame is significantly reduced compared with the case where the conventional side member 1 (see FIG. 9) of an iron plate press product is employed. Can be achieved.

  Further, in the example described above, a channel shape having flanges 3 and 4 on the upper and lower sides of one web 2 is used as a base, and an appropriate number of stages (two in the illustrated example) is provided between the upper and lower flanges 3 and 4. Although the flanges 6 and 7 are newly described, as shown in FIGS. 5 to 7 as another example, a rectangular section box having flanges 3 and 4 above and below the two webs 2 and 8. An appropriate number of flanges 6 and 7 (two stages in the illustrated example) may be newly provided between the upper and lower flanges 3 and 4 with the side member 5 'constituting the base as a base (FIG. 1 is a sectional view of another example corresponding to the II-II arrow view of FIG. 1, FIG. 6 is a sectional view of another example corresponding to the III-III arrow view of FIG. 1, and FIG. Cross-sectional view of another corresponding example).

  Further, by developing the idea of providing a plurality of webs 2 and 8 as described above, an appropriate number of webs 9 (one in the illustrated example) are newly provided between the left and right webs 2 and 8, as shown in FIG. In this way, the left side portion and the right side portion of each side member 5 ′ are appropriately cut out while leaving the web 9, and each side member 5 ′ has a kick shape in the vehicle width direction. Can also be realized.

  It should be noted that the vehicle frame structure of the present invention is not limited to the above-described embodiments, and it is needless to say that various changes can be made without departing from the gist of the present invention.

It is a side view which shows an example of the form which implements this invention. It is sectional drawing of the II-II arrow of FIG. It is sectional drawing of the III-III arrow of FIG. It is sectional drawing of the IV-IV arrow of FIG. It is sectional drawing of another example corresponded to the II-II arrow of FIG. It is sectional drawing of another example corresponded to the III-III arrow of FIG. It is sectional drawing of another example corresponded to the IV-IV arrow of FIG. It is sectional drawing which shows another example of this invention. It is a side view which shows a prior art example. It is sectional drawing of the XX arrow of FIG. It is sectional drawing of the XI-XI arrow of FIG. It is sectional drawing of the XII-XII arrow of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Side member 2 Web 3 Flange 4 Flange 5 Side member 5 'Side member 6 Flange 7 Flange 8 Web 9 Web

Claims (4)

  A vehicle frame structure in which left and right side members extending in the longitudinal direction of the vehicle are made of extruded aluminum, and each side member has an appropriate number of flanges between upper and lower flanges. Frame structure.   The vehicle frame structure according to claim 1, wherein each side member has a plurality of webs so as to form a box structure in cooperation with each flange.   The upper or lower portion of each side member in the required range in the longitudinal direction is cut away, leaving any flange between the upper and lower flanges, thereby giving each side member a vertical kick shape. The vehicle frame structure according to claim 1 or 2.   The left side portion or the right side portion of each side member in the required range in the longitudinal direction is cut out while leaving any web, so that each side member has a kick shape in the vehicle width direction. 4. The vehicle frame structure according to 3.

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